Problem with MODIS images

Marco Marsella m.marsella at ITWORKS.IT
Tue Apr 12 09:08:23 EDT 2005


Hi list,

I am having problems with some MODIS images. They show as skewed white
squares on black background. I attach a small screen capture GIF.
Mapserver is 4.4.1, gdalinfo --formats reports

Supported Formats:
   VRT (rw+): Virtual Raster
   GTiff (rw+): GeoTIFF
   NITF (rw+): National Imagery Transmission Format
   HFA (rw+): Erdas Imagine Images (.img)
   SAR_CEOS (ro): CEOS SAR Image
   CEOS (ro): CEOS Image
   ELAS (rw+): ELAS
   AIG (ro): Arc/Info Binary Grid
   AAIGrid (rw): Arc/Info ASCII Grid
   SDTS (ro): SDTS Raster
   OGDI (ro): OGDI Bridge
   DTED (rw): DTED Elevation Raster
   PNG (rw): Portable Network Graphics
   JPEG (rw): JPEG JFIF
   MEM (rw+): In Memory Raster
   JDEM (ro): Japanese DEM (.mem)
   GIF (rw): Graphics Interchange Format (.gif)
   ESAT (ro): Envisat Image Format
   BSB (ro): Maptech BSB Nautical Charts
   XPM (rw): X11 PixMap Format
   BMP (rw+): MS Windows Device Independent Bitmap
   AirSAR (ro): AirSAR Polarimetric Image
   RS2 (ro): RadarSat 2 XML Product
   PCIDSK (rw+): PCIDSK Database File
   ILWIS (rw+): ILWIS Raster Map
   GMT (rw): GMT NetCDF Grid Format
   netCDF (ro): network Common Data Format
   HDF4 (ro): Hierarchical Data Format Release 4
   HDF4Image (rw+): HDF4 Dataset
   PNM (rw+): Portable Pixmap Format (netpbm)
   DOQ1 (ro): USGS DOQ (Old Style)
   DOQ2 (ro): USGS DOQ (New Style)
   ENVI (rw+): ENVI .hdr Labelled
   EHdr (rw+): ESRI .hdr Labelled
   PAux (rw+): PCI .aux Labelled
   MFF (rw+): Atlantis MFF Raster
   MFF2 (rw+): Atlantis MFF2 (HKV) Raster
   FujiBAS (ro): Fuji BAS Scanner Image
   GSC (ro): GSC Geogrid
   FAST (ro): EOSAT FAST Format
   BT (rw+): VTP .bt (Binary Terrain) 1.3 Format
   LAN (ro): Erdas .LAN/.GIS
   CPG (ro): Convair PolGASP
   IDA (rw+): Image Data and Analysis
   NDF (ro): NLAPS Data Format
   JPEG2000 (rw): JPEG-2000 part 1 (ISO/IEC 15444-1)
   L1B (ro): NOAA Polar Orbiter Level 1b Data Set
   FIT (rw): FIT Image
   MrSID (ro): Multi-resolution Seamless Image Database (MrSID)
   USGSDEM (rw): USGS Optional ASCII DEM (and CDED)
   GXF (ro): GeoSoft Grid Exchange Format

and gdalinfo on the image file reports

Driver: GTiff/GeoTIFF
Size is 12205, 10098
Coordinate System is:
GEOGCS["WGS 84",
     DATUM["WGS_1984",
         SPHEROID["WGS 84",6378137,298.2572235630016,
             AUTHORITY["EPSG","7030"]],
         AUTHORITY["EPSG","6326"]],
     PRIMEM["Greenwich",0],
     UNIT["degree",0.0174532925199433],
     AUTHORITY["EPSG","4326"]]
Origin = (100.529340,-1.327067)
Pixel Size = (0.00208000,-0.00208000)
Metadata:
   TIFFTAG_SOFTWARE=MRTSwath
Corner Coordinates:
Upper Left  ( 100.5293404,  -1.3270670)
Lower Left  ( 100.5293404, -22.3309070)
Upper Right ( 125.9157405,  -1.3270670)
Lower Right ( 125.9157405, -22.3309070)
Center      ( 113.2225405, -11.8289870)
Band 1 Block=12205x1 Type=UInt16, ColorInterp=Gray

Any suggestion, please ?

TIA

Marco


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